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3 years ago

Least to greatest. 3/4, 0.72, 69%, 0.63

Mathematics

2 answers:

8090 [49]3 years ago

8 0

.63, 69%, 0.72, 3/4, there you gooooo

Anton [14]3 years ago

6 0

Hey! this is very simple to learn. So 3/4 would be 75% just think of quarter (25,50,75,100) Then to convert a decimal to a percent you just multiply it by 100. When multiplying decimals by 100 you just move the decimal over two spaces. So .72 would be 72% and .63 would be 63%. Knowing all of this the answer is right there!

From least to greatest 0.63, 69%, 0.72, 3/4

I hope this helps!

-Ayden

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The probability that the random variable X takes the value x is given by P(X=x) = $25Cx 0.05^x0.95^{25-x}$ . Then,

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(b) $P(X\geq5) = 1-P(X\leq4) = 1 - (0.873 + (25C3)(0.05^3)(0.95^{22}) + (25C4)(0.05^4)(0.95^{21})) = 1 - (0.873 + 0.12) = 0.007$

(c) $P(1\leqX\leq4) = (25C1)(0.05^1)(0.95^{24}) + (25C2)(0.05^2)(0.95^{23}) + (25C3)(0.05^3)(0.95^{22}) + (25C4)(0.05^4)(0.95^{21}) = 0.715$

(d) $P(X=0) = (25C0)(0.05^0)(0.95^{25}) = 0.277$

(e) E(X) = np = (25)(0.05) = 1.25 and $Sd(X) = \sqrt{Var(X)} = \sqrt{np(1-p)} = 1.09$

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